Plastic extruder is a kind of common plastic machinery and equipment, in the daily operation in the process of the extruder, extrusion opportunities appear all kinds of fault, affect the normal production of plastic machinery, let's failure analysis of the extruder.
The host current is not stable
Production reasons:
The paper is not well fed.
The main motor bearings are damaged or lubricated.
A heater failed, not heating.
The screw adjustment pads are not correct, or the phase is not correct, the component interferes.
2, treatment:
Check feed machine and troubleshoot trouble.
Check the main motor and replace the bearing when necessary.
Check to see if the heater is working properly and replace the heater when necessary.
Check the adjustment pad and pull out the screw to check for interference.
The main motor cannot start
1, causes:
There is a mistake in driving a car.
There is a problem with the thread of the main motor, whether the fuse is burnt.
It works with a chain of main motors
2, treatment:
Check the procedure and drive the car in the right order.
Check the main motor circuit.
Examine whether the lubricating oil pump is started and check the status of the interlocking device associated with the main motor.
The pump is not open, the motor cannot be opened.
The converter sensor is not finished, turn off the total power supply and wait five minutes before starting.
Check to see if the emergency button is reset.
The head is not open or blocked
1, causes:
The paper heater is not working, the material is malleable.
The operation temperature setting is low, or the molecular weight of plastic is wide and unstable.
There may be a foreign body that is not easily melted.
2, treatment:
Inspect heater and replace when necessary.
To verify the temperature of each section, consult with the technologier to raise the temperature setting.
Clean check the extrusion system and the head.
The main electricity starts too high
1, causes:
Insufficient heating time, large torque.
The section heater does not work.
2, treatment:
When driving, use a handcart, if not easy, extend the heating time or check if the section heater works properly.
The main motor makes an abnormal sound
1, causes:
The main motor bearing was damaged.
A controlled silicon controlled rectifier circuit in the main motor is damaged.
2, treatment:
The main motor bearing is changed.
To examine the rectifier circuit of silicon controlled, and to replace the thyristor when necessary.
